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Subject[PATCH] regmap: Add tracepoints for cache only and cache bypass
Date
Useful for figuring out where the hardware interaction went or came from.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---
drivers/base/regmap/regcache.c | 2 ++
include/trace/events/regmap.h | 36 ++++++++++++++++++++++++++++++++++++
2 files changed, 38 insertions(+), 0 deletions(-)

diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 6cd0398..1124abc 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -360,6 +360,7 @@ void regcache_cache_only(struct regmap *map, bool enable)
mutex_lock(&map->lock);
WARN_ON(map->cache_bypass && enable);
map->cache_only = enable;
+ trace_regmap_cache_only(map->dev, enable);
mutex_unlock(&map->lock);
}
EXPORT_SYMBOL_GPL(regcache_cache_only);
@@ -397,6 +398,7 @@ void regcache_cache_bypass(struct regmap *map, bool enable)
mutex_lock(&map->lock);
WARN_ON(map->cache_only && enable);
map->cache_bypass = enable;
+ trace_regmap_cache_bypass(map->dev, enable);
mutex_unlock(&map->lock);
}
EXPORT_SYMBOL_GPL(regcache_cache_bypass);
diff --git a/include/trace/events/regmap.h b/include/trace/events/regmap.h
index 12fbf43..d697382 100644
--- a/include/trace/events/regmap.h
+++ b/include/trace/events/regmap.h
@@ -139,6 +139,42 @@ TRACE_EVENT(regcache_sync,
__get_str(type), __get_str(status))
);

+DECLARE_EVENT_CLASS(regmap_bool,
+
+ TP_PROTO(struct device *dev, bool flag),
+
+ TP_ARGS(dev, flag),
+
+ TP_STRUCT__entry(
+ __string( name, dev_name(dev) )
+ __field( int, flag )
+ ),
+
+ TP_fast_assign(
+ __assign_str(name, dev_name(dev));
+ __entry->flag = flag;
+ ),
+
+ TP_printk("%s flag=%d", __get_str(name),
+ (int)__entry->flag)
+);
+
+DEFINE_EVENT(regmap_bool, regmap_cache_only,
+
+ TP_PROTO(struct device *dev, bool flag),
+
+ TP_ARGS(dev, flag)
+
+);
+
+DEFINE_EVENT(regmap_bool, regmap_cache_bypass,
+
+ TP_PROTO(struct device *dev, bool flag),
+
+ TP_ARGS(dev, flag)
+
+);
+
#endif /* _TRACE_REGMAP_H */

/* This part must be outside protection */
--
1.7.9.1


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